
When used for 30 minutes per day during the winter months, the 10,000 lux brite box provides the necessary level and quality of light to fully alleviate S.A.D symptoms in approximately 95% of cases.
Over 30% of the UK population are needlessly suffering with seasonal affective disorder due to the lack of winter daylight.


If so, then you/they may be suffering due to light deficiency (seasonal affective disorder SAD) during the dark winter months!






According to research by Partonen & Lonnqvist (2000) bright light improves vitality and alleviates distress in healthy people.
Partonen & Lonnqvist exposed office employees to bright light during winter and found that repeated bright-light exposure improved vitality and reduced depressive symptoms. The benefit was observed not only in healthy subjects with season-dependent symptoms but also in those not having the seasonal variation. Bright-light exposure during winter therefore appears to be effective at improving the health-related quality of life and alleviating distress in healthy subjects. It is suggested that administration of bright light is a useful option to improve vitality and mood particularly among those working indoors in wintertime.
In the case of jet lag the individual is reacting to externally induced changes in the sleep-wake cycle. Travelling west to east over three or more time zones is the most difficult shift. Large forced changes in the timing of sleep periods can lead to irritability and decreased alertness, several studies have shown that light therapy can be used very effectively to alleviate these symptoms (Smyth, 1990).
Shift workers often have symptoms of mild depression, fatigue, difficulty with sleeping and problems with attention and alertness. Studies have shown that these symptoms may also be significantly reduced through the use of light therapy (Czeisler et al, 1990; Stewart et al, 1995).

Humans and animals generally have innate sleep-wake cycles close to but not exactly 24 hours. They depend on the daily light-dark cycle to keep their circadian rhythms to a regular 24 hours. If a human is left in a room with no light-dark cues, he or she will gradually shift into a sleep-wake cycle that is not exactly 24 hours long.
Body temperature and the secretion of the hormone melatonin follow the daily cycle. Other factors, such as work schedule can modify the sleep-wake cycle in humans. The autonomous cycle length varies at different periods in the life span. Adolescents often have an innate cycle longer than 24 hours so that they have the desire to stay up late and sleep in when it is time to get up. The innate cycle then shifts closer to 24 hours for adults, but for the elderly, the autonomous sleep-wake cycle may be shorter than 24 hours resulting in evening tiredness, sleep difficulty and waking too early.
Individuals who have more severe difficulty with the timing of their sleep-wake cycle may have either Delayed Sleep Phase Disorder (difficulty falling sleep and the urge to sleep late) or Advanced Sleep Phase Disorder (tiring too early and waking too early). Both conditions can be treated with bright light.
Just a quick e-mail to let you know that I am extremely pleased with the Britebox - I have started to notice a difference after using it for just a couple of days. I was also delighted with the way you handled my initial query, the problem was sorted within the hour with the minimum of fuss. This also goes for the supplier who also was very courteous and efficient, once again thankyou. RB, Hull
My psychiatrist has told me that my symptoms were so severe hospitalisation was considered. I use the Brite Box every day and for the first time in years can stay awake and alert all day, even after an early shift. I am motivated and my appetite has balanced out. I feel well. Nathalie L
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